[7.14](backport #26642) [fix][metricbeat] Change default value for server_status_path in nginx module

[mergify]

This is an automatic backport of pull request #26642 done by Mergify.

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[elasticmachine]

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• Start Time: 2021-08-03T07:25:38.147+0000

• Duration: 74 min 27 sec

• Commit: 7ce46da

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Test	Results
Failed	0
Passed	8454
Skipped	2265
Total	10719

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Test stats 🧪

Test	Results
Failed	0
Passed	8454
Skipped	2265
Total	10719

[mergify]

This pull request is now in conflicts. Could you fix it? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b mergify/bp/7.14/pr-26642 upstream/mergify/bp/7.14/pr-26642
git merge upstream/7.14
git push upstream mergify/bp/7.14/pr-26642